Mismatch negativity and auditory sensory memory evaluation

Grau, Cai; Escera, Carles; Yago, Elena; Polo,

doi:10.1097/00001756-199808030-00005

Cited by 49 publications

(43 citation statements)

References 7 publications

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“…Grau et al 7 , using Standard stimuli of 75ms in duration (likelihood =0.83) and 25ms deviant stimuli (likelihood = 0.17), with 700 Hz and 85 dB SPL of intensity, with binaural presentation and inter-stimuli intervals of 0.4 s and 4.0s in different stimulation blocks, observed the EPs in response to Standard stimuli with a typical morphology characterized by P1, N1 and P2 waves. These exogenous potentials are sensitive to the stimuli physical characteristics.…”

Section: Resultsmentioning

confidence: 99%

Contribuição do Mismatch Negativity na avaliação cognitiva de indivíduos portadores de esclerose múltipla

Santos

Munhoz

Peixoto³

et al. 2006

Rev. Bras. Otorrinolaringol.

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Mi smatch Negativity is a functional index of the supratemporal auditory cortex. Aim: The aim of the present study on Mismatch Negativity (MMN) in multiple sclerosis (MS) patients was to evaluate if the MMN can be correlated with cognitive deficits assessed by the Paced Auditory Addition Task -PASAT. Method: a clinical study in forty females and 20 males separated in two groups: control individuals and those with a definite diagnosis of MS underwent a duration and frequncy MMN. The MMN latencies and negative amplitudes obtained from the MS group were compared to the ones from the control group. The scores from the Paced Auditory Addition Task were correlated either with the presence or the absence of MMN. Results: MMN was found in 60% of the individuals with multiple sclerosis within the auditory stimulation protocol with varied durations, and in 45 % within the auditory stimulation protocol with frequency variations. There were no statistically significant differences in latencies and amplitudes when compared to controls. We found a statistically significant correlation for the lack of MMN wave together with cognitive disorder asserted by the PASAT. Conclusions: The MMN correlated to the cognitive deficit assessed by the PASAT.

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Section: Resultsmentioning

confidence: 99%

Contribuição do Mismatch Negativity na avaliação cognitiva de indivíduos portadores de esclerose múltipla

Santos

Munhoz

Peixoto³

et al. 2006

Rev. Bras. Otorrinolaringol.

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“…The same frequencies had been used in previous studies exploring auditory sensory memory duration in children and adults (Barry et al, 2008;Glass et al, 2008aGlass et al, , 2008bGomes et al, 1999). Because of difficulties associated with ERP recording in young children, we used a time-saving oddball paradigm described by Grau, Escera, Yago, and Polo (1998; Figure 1). Stimuli were grouped in trains of four tones with an interval of 500 ms between the tones within the trains.…”

Section: Stimuli and Proceduresmentioning

confidence: 99%

Auditory sensory memory and language abilities in former late talkers: A mismatch negativity study

et al. 2010

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The present study investigated whether (a) a reduced duration of auditory sensory memory is found in late talking children and (b) whether deficits of sensory memory are linked to persistent difficulties in language acquisition. Former late talkers and children without delayed language development were examined at the age of 4 years and 7 months using mismatch negativity (MMN) with interstimulus intervals (ISIs) of 500 ms and 2000 ms. Additionally, short-term memory, language skills, and nonverbal intelligence were assessed. MMN mean amplitude was reduced for the ISI of 2000 ms in former late talking children both with and without persistent language deficits. In summary, our findings suggest that late talkers are characterized by a reduced duration of auditory sensory memory. However, deficits in auditory sensory memory are not sufficient for persistent language difficulties and may be compensated for by some children.

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“…The paradigm described in Grau et al (1998) was used to obtain MMN data from the subjects. The stimuli (85 dB SPL) consisted of pure sine-wave tones of 700 Hz, with a duration of 75 ms (standard tone) or 25 ms (deviant tone), with 5 ms of fall/rise time.…”

Section: Subjects and Stimulimentioning

confidence: 99%

Combined ICA-LORETA analysis of mismatch negativity

Marco-Pallarés

Grau

Ruffini³

2005

NeuroImage

222

152

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A major challenge for neuroscience is to map accurately the spatiotemporal patterns of activity of the large neuronal populations that are believed to underlie computing in the human brain. To study a specific example, we selected the mismatch negativity (MMN) brain wave (an event-related potential, ERP) because it gives an electrophysiological index of a bprimitive intelligenceQ capable of detecting changes, even abstract ones, in a regular auditory pattern. ERPs have a temporal resolution of milliseconds but appear to result from mixed neuronal contributions whose spatial location is not fully understood. Thus, it is important to separate these sources in space and time. To tackle this problem, a two-step approach was designed combining the independent component analysis (ICA) and low-resolution tomography (LORETA) algorithms. Here we implement this approach to analyze the subsecond spatiotemporal dynamics of MMN cerebral sources using trial-by-trial experimental data. We show evidence that a cerebral computation mechanism underlies MMN. This mechanism is mediated by the orchestrated activity of several spatially distributed brain sources located in the temporal, frontal, and parietal areas, which activate at distinct time intervals and are grouped in six main statistically independent components. D 2004 Elsevier Inc. All rights reserved.

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Mismatch negativity and auditory sensory memory evaluation

Cited by 49 publications

References 7 publications

Contribuição do Mismatch Negativity na avaliação cognitiva de indivíduos portadores de esclerose múltipla

Contribuição do Mismatch Negativity na avaliação cognitiva de indivíduos portadores de esclerose múltipla

Auditory sensory memory and language abilities in former late talkers: A mismatch negativity study

Combined ICA-LORETA analysis of mismatch negativity

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